Gas-producer.



ELIA. W. JEFFERIES & J. R. GEORGE. GAS PRODUCER. APPLICATION FILED1320.1, 1910,

1,@9?,757, Patented May 26, 1914.

'man sra'rns PATENT oFFIon.

EBENEZER A. W. JEFFERIES AND JEROME R. GEORGE, OF WORCESTER, MASSACHU-SETTS, ASS-IGNORS TO MORGAN CONSTRUCTION COMPANY, OF WORCESTER, MASSA-CHUSETTS, A CORPORATION OF MASSACHUSETTS.

GAS-PRODUCER.

mower.

Application filed December 1, 1910. Serial No. 595,160.

specification, accompanied by a drawing,

forn'iing a part of the same.

Our invention relates to an improvement in that class of gas producersemployed for the production of fuel gas and particularly that class offuel gas producers which employs Within the heating chamber means toeffect the rotation of the fuel contained in the lower portion of theheatingchamber, and it consists in the employment or" an annular beveledshelf or screen supported by the inner wall of the gas producingnchamber and above the ilario of the rotatinw means, as hereinafterdescribed and pointed outl in the annexed claims.

In the accompanying drawingl we have represented a side view of agasprmlucer embodying' our invention, havingthe lower portion shown incentral sect-ion.

Several parts hereinafter referred to are i udicated by referencecharacters.

The heal-ing chamberl is inclosed in a casing 2 preferably cylindricaland supported upon c`oliunns 3. The upper portion of the casing ispreferably lined with a refractory material 4 and the lower portion issurrounded by an annular water chamber lncloscd within the lower portionof the easing are means for rotating the fuel, consisting, in thepresent. instance, of hollow radial arms 6, 6 attached to a centralrotating dome or pipe 7 which, in the present instance, is att-ached toan ash pan 8 spaced hele-sT the gas producer casing and rotated by anysuitable means, not shown, upon the supporting rollers 9. A blast of airand steam is supplied through a supply pipe l0 to the hollow dome 7,from which it passes to the interior' of the heating chamber througl'iopenings or slits 11, fil 'in the top of the dome and also through slits12, 12 formed in the tops of the hollow arms 6. fis the fuel is movedaround within the lower portion of the casing` by the rotation of thearms (i, 6, its out-ward movement, which would tend to produce awedginp, action of Specification of Letters Patent.

Patented May 26, 1914.

the fuel againstlhe inner sides of the casing', is restrained by meansof an annular band 13 attached to the outer ends of the radial arms 6.

The above construction comprises no part of our present4 invent-ion,which relates to the employment above the rotating arms G, (l andannular band 13 of an annular shield 14, preferably formed in, sectionslll-a` and means of bolts 15. The upper surface, 1o of the shield 14 isbeveled, forming anobtus-e. angle with the inner side of the casing, sothat fuel in its downward movement will be carried toward the center ofthe `heating chamber. The under side of the shield is provided with arecess 17 to receive the upper edge of the band 19 and allow the loweredge 1S of the shield to overhang the upper edge of the band 13 andextend downward into a lower horizontal plane.

As combustion proceeds and ashes are removed froni theI ash pan 8, the,mass of fuel in the heating' chamber l` 2f jradually moves downwarduntil it comes in contact with the beveled surface 1G of the annularshield. which causes the fuel to be crowded toward the center of thechamber and lo fall inside the annular band lf3 and between the radialvarms (i, 6.

The beveled surface 16 affords a partial support for thc superil'nposedmass of fuel, and while the contents of the heating' chamber below theshield are beingl forcibly rotated by the arms 6, (i, the. rotativemovement, of the fuel above the shield is reduced by the supportafforded by the shield, thereby producingq a cleavage of' the fuel andprevemtingT the forn'iation of clinkers. The shield also, byover-hanging the edge of the band 13. prevents the access of coalbetween the band and the wall of the produ(I lr. The shield isprelerably made in sections, which are normally sliejlitly separated inorder to provide for the necessary expansion of the sections during theoperation of the producei-,and also to enable individual sections to bereplaced when they may have become burned by the heat.v of the producer.The shield is also 'protected from the heat of the 'producer by beingattached to a metallic wall of the. casing which is surrounded by theannular water chamber by which the heat of the casing and of thepshieldis reduced,

attached to the inner side of the casingbv We claim,

1. In a gas producer, a metal casing in# closing the lower part of aheating chamber, and an annular shield detachably attached only to saidmetal casing and lia-ving an oblique or beveled upper surface.

2. 1n a gas producer, a casing inclosing the lower partof the heatingchamber, and an annular shield detachably attached only to said casing,said shield having an upper beveled surface and having a horizontallower edge provided with an annular recess.

3. ln a. gas producer, a casing inclosing the lower part of a heatingchamber, an annular shield detachably attached to said easing` only,with the upper surfacev of said shield beveled and the lower surfacehorizontal with a concave recess, and a rotatable annular plate with itsside slightly inclined from a vertical and with its upper edge enteringsaid recess.

l1. ln a gas producer, a metal casing inclosing,` the lower part of agas producing` chamber, means for water cooling said casing, a shielddetachably attached to the water cooled wall of said easing, said shieldconsisting of sections having beveled upper urtaces and horizontal lowerrecessed suraces.

said casing, arms inclosed in the lower part of said casing, means forrotating said arms about a vertical axis, an annular band attached tothe ends of said arms and inclosed Within said casing, and ashield abovesaid arms and attached to said casing, said shield having a beveledupper surface, with the inner lower edge of said shield extending belowthe upper edge of said band.

6. In a gas producer, a casing inclosing a heating chamber, armsinclosed in the lower part orn said casing, means :tor rotating saidarms about a vertical axis, an annular band attached to the ends of saidarms and inclosed within said casing, and a shield above said arms andattached to said casing, said shield having a beveled upper surface,with the inner lower edge oi said shield extending inwardly beyond theupper edge of said band.

Dated this 28th da)7 of November 1910. EBEUEZER A. W'. JEFERIES. JEROMER. GEORGE.

lllitnesses Hanninfr'rn l). MANN, FRAM; M. LORD.

